Weather in Portsmouth in July
In an average July, Portsmouth sees a daily high around 21°C and a low around 13°C, based on 1980–2026 of local climate records.
| Average high | 21°C |
|---|---|
| Typical high range | 17°C to 26°C |
| Average low | 13°C |
| Typical low range | 10°C to 16°C |
| Average daily precipitation | 3 mm |
July records
The most extreme July on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total July accumulation.
High
Highest
33°C
2006-07-19
Lowest
14°C
1988-07-03
Low
Highest
21°C
2026-07-10
Lowest
7°C
2015-07-31
Feels-like
Highest
38°C
2006-07-19
Lowest
4°C
1993-07-10
Humidity
Highest
15.4 g/m³
1994-07-24
Lowest
7.2 g/m³
2020-07-21
Wind
Highest
44 km/h
2007-07-26
Lowest
7 km/h
2021-07-01
Gust
Highest
87 km/h
2004-07-07
Lowest
13 km/h
2021-07-18
Precip
Wettest
122 mm
2007
Driest
1 mm
2026
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